Telephone Switching Course
This course builds key skills in telephone switching for PSTN and VoIP networks. You will learn to handle circuit and packet voice, master SS7, SIP, RTP, and QoS. Gain hands-on know-how in capacity planning, codec choices, security setups, PSTN-IP integration, and troubleshooting with tools like Wireshark. Perfect for designing and maintaining top-quality voice systems in telecom today.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
Gain practical skills in telephone switching, covering TDM basics, SS7/ISUP, VoIP with SIP, RTP, media gateways, QoS management, capacity planning, codec picks, high availability, migration plans, interworking, and troubleshooting for reliable voice networks.
Elevify advantages
Develop skills
- Design VoIP capacity by sizing trunks, calls, and QoS needs.
- Set up SIP, RTP, and codecs for strong packet voice delivery.
- Add security to voice with SRTP, SIP TLS, NAT fixes, and firewall rules.
- Link PSTN and IP using SS7-SIP gateways and call paths.
- Fix voice issues with Wireshark, logs, MOS checks, and RTP tools.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
Your classes are perfect. I purchased the one-year package and finally have the chance to follow several topics I'm interested in without having to switch platforms... I appreciate everything you do, I've already recommended you to others...

Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can switch chapters and skip content I don't need.

Mariana FerresPhotography Student
I like the content and the way the videos are presented and transcribed, which speeds up the process!

Luciana AlvarengaNail Design Student
The platform is fast and easy to use. The variety of content and the extra videos really help with learning.

Giulio CarloPrompt Engineering Student
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